Water gun



Aug. 22, 1950 C. B. BRASSINGTON ET AL WATER GUN Filed Jan. 30, 1948 1M'ENTORS CHA RLES a. BRASS 1 NGTON 5 ERT/ZST/ B TZ 9 .4 TTORNEY and indiscussing its use ninety tons in a pile a, long Patented Aug. 22, I,1950 WATER GUN Charles B. Brassington and Bert Stibitz, Mount, Carmel,Pa.

Application January 30, 1%8, ,Serial No. 5,376

. 3 Claims. (01. 299.450)

i The present invention relates to spraying an paratus and moreparticularly to a water gun for use in wetting coal or'other loosematerialto allaymdustand improve working conditions in confined'or otherareas. i v r While the gun of the present invention was designedprimarily to solve. the problemsincident to the production and handlingof coal, his to be understood it may have a wide, range ,of use withcoal, the scope of the invention is not to be limited. The problemsreferred to may be stated as follows:

Ascoal is produced from the seam it is shot downwith explosives andfalls away from the face in piles. The amount depends upon the width ofthe face and the height of the seam. Thre is dust in the air and ,in-thepile of coal after this operation. There. are twoproblems. One is aspray which will settle and drive out the dust and fumes inwthegairafter the coal has been blown down. The second is to wet the pile ofcoal so that the dust and the oxides of nitrogen are eliminated when thecoal is loaded into mine cars. 7

In nozzles as heretofore used and. particularly those of the fog type,the water capacity is relatively limited and of a, short effectiverange. \When the largeamounts of coal are blown down it requires a;considerable amountof time to wet the coal with a fog nozzle because-thecapacity is approximately five gallons of water per minute and itrequires three gallons of \vatcrto'wet a ton of coal. Therefore, ifthere are; fifty to time is required for wetting. Thus, the fog nozzleor any other nonale-s oi whichapplicants have knowledge. are noteffective for this operation. "some of the objects of the presentinvention are to provide an improved water gun;to'pro.- vide a water gunof rugged construction equipped with a novelnozzle for creatingv aneffective spray for reducing dust and iumes;..to provide spray gunwherein a nozzle functions to pass about twenty gallons of water perminute for'efiiciently wetting a pile of coal; to provide a spray nozzleunlike conventional nozzles in that it gives a wider range for effectivecoverage and at such relatively low pressures that the water can bethrown over a thirty foot area; to provide a spray nozzle in associationwith a nozzle finger tip adjustment; to provide a spray nozzle so shapedand arranged that the cushioning effect of the projected water on thevalve seat prevents wear; and to provide other improvements as willhereinafter appear.

1 In the accompanying drawings, Fig. 1 represents a sectional elevationof a spray gun embodying one form of the present inventiom'l ig. 2represents a detail in section of the nozzle end of the gun, showingthevalve in one open 'posie tion, the section being on an enlargedscale; Fig; 3 represents an end elevation of the gun viewed irom thenozzle end Fig. 4 represents'a side el-e vation of the valve stem; Fig.5 represents a side elevation of the control member} Fig; 6 representsan end elevation of the control member;

- and Fig. '7 represents a rear end elevation of the valve stem.

Referring to the drawings, one form of the present invention comprisesan elongated tubular barrel or body it having an angularly disposedtubular neck H, preferably threaded at its free end for coupling thedischarge end of a hose (not shown) by which a medium, sucha s water,is'supplied under pressure by way of the conduit F2 to the bore I3 ofthe barrel Ill.

For discharging the incoming water, the bore end of the barrel H]towards which the angular conduit 12 is directed, is enlarged at apredetermined location to form a circumferential out wardly divergingthroat M, which terminates in a cylindrical passage [5 coaxial with thebore '53. The. outer circumferential edge it of the passage {5 forms aseat for a valve disc H in the form or a truncated-segment of a spherewhich serves tov open and close the passage l5 for positive regulateddischarge of "water by axial movement of the attached valve stem l8.This regulation is supplemented by a novel discharge nozzle termed byoutwardly flaring the discharge end of the barrel Hi to form an annularhead 28 having a. wall thickness greater than the thickness of the wallof the barrel lil. Internally, the head Zll is. cup shaped, therebyproviding an arcuate surface 2|; complemental to and encircling theconvex surface of the valve disc I1, and so di mensioned as to provide aslight clearance between theparts as the valve disc ll moves away fromits closed seating position upon the edge ISMPr-eferablithe respectiveradii'of the convex and the concave surfaces are described about thesame center. Thus, the discharge end of the concave nozzle has a definedconvergence which functions to cause a portion of the discharged streamto be directed towards the axis of the discharge. As a, result, theworking stream comprises a core of fog encircled by a more or less solidcone or fan of water particles. By varying the position of the valvedisc I! within the three-part shaped nozzle, the diameter of dischargewill take place.

the cone can be altered to meet the particular condition of use;however, the distinct advantage of the nozzle configuration is that itis possible to obtain an effective spray coverage up to fifty feet andat comparatively low water pressures. Furthermore, the radial design ofthe valve disc and the valve body discharge end protects the valve seatby a cushion of water which prevents wear.

In order to control the valve adjustment, the valve stem 18 is threadedfor an appreciable portion of its length (preferably about one half) totraverse a threaded portion 19 of the bore 13, and project exteriorly ofthe bore I3 by way of a stufiing box or packing gland, 22, where itterminates in a reduced square section 23, followed by a further reducedthreaded tip 24. Torque is transmitted to the valve stem I8 by means ofa cup sleeve 25 of an internal diameter to externally telescope with theouter cylindrical face of the barrel I0, and having its closedendprovided with a square hole 26 coaxial with the stem l8. The hole 26 isdimensioned to fit snugly about the square section 23 while allowing thethreaded tip 24 to project in order to receive a locking nut 21. By thisconstruction, a finger tip control for regulation of the valve isobtained, and for ease of operation the sleeve surface is; preferablyknurled. Also, this sensitive finger tip control prevents damage to thevalve stem due to rough use.

In operation, the neck II is connected by a hose to a suitable source ofwater under pressure and with the valve disc I7 in closed position nothe control sleeve 25 is turned to feed the stem l8 in the direction tolift the valve 17 from the seat I 6 and start the stream discharge. Theshape and character of the emerging stream can then be adjusted byfurther fingertip manipulation of the sleeve 25 to thereby alter therelative positions of the convex and concave surfaces and their relationto the two-part throat.

Thus it will be evident that the normal open position of the valve l1depends upon the water pressure and the type of spray pattern desired.For example, with a fog spray the valve 11 would be practically closed,while if a narrower pattern or greater water capacity is required thevalve At the place of use discharge head on said casing internallycontoured to provide successively an expansion throat, a cylindricalpassage, and a cup-shaped discharge, said parts forming a unitary nozzlefor projecting fog and water, said water being a solid cone encirclingsaid fog, means to introduce water under pressure to the interior ofsaid casing, a valve movably mounted in said discharge, said valve beingcomplementally contoured to seat within said discharge as a closure, andmeans for actuating said valve, whereby in open position thereof thefiow through said dis- 1 charge can be regulated.

1 a stem on said valve threaded within said casing and projectingexteriorly thereof, and means on the projecting end of said stem to turnsaid stem to open and close said valve, whereby in open position theflow through said discharge can be regulated.

I! would be farther away from the seat. Attenfl tion is further directedto the novel cylindrical passage [5 which functions to form a cushion ofwater serving as a means to protect the circumferential seat I 6. Also,it causes a more streamlined flow and ordinarily created in prior typenozzles by an abrupt change in direction. Furthermore, the dischargeentering the diverging throat is agitated so that the valve isself-cleaning. Thus, pieces of coal, rust, timber chips, and otherparticles are prevented from clogging the outlet and the use ofstrainers for this purpose is unnecessary.

Having thus described our invention, we claim:

1. A water gun comprising a tubular casing, a

decreases the friction 3. In a water gun, the combination of a dischargenozzle formed by a conical outwardly diverging inlet, a concave outlet,and a. cylindrical passage intermediate said inlet and outlet,

. and a valve in the form of a spherical segment REFERENCES CITED Thefollowing references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date a 394,920 Hallowell Dec. 18, 1888726,395 Bedworth Apr. 28, 1903 1,110,516 Terry Sept. 15, 1914 1,143,293Luehrs June 15, 1915 1,279,400 Miner Sept. 17, 1918 1,737,155 HewittNov. 26, 1929 2,089,304 Stein Aug. 10, 1937 2,120,620 Mowery June 14,1938 2,127,188 Schellin et al. Aug. 16, 1938 2,156,800 Bucknell et alMay 2, 1939 2,207,758 Rehse July 16, 1940 2,311,884 Steinicke' Feb. 23,1943 2,417,655 Lindsay Mar. 18, 1947 FOREIGN PATENTS Number Country Date173,327 Switzerland 1 Feb. 16, 1935

